By every measure, the Color Convert Ruler by We R Memory Keepers is a must-have tool for crafters and makers. This helpful ruler features a sliding, color-coded chart that converts fractions into decimals and centimeters, taking the guesswork out of it all. The sliding guide also locks accurately into place at every inch increment, and is easy to read and handy to have around for all sorts of projects. Its standard 12x12 inch size makes it perfect for scrapbooks, cards, posters, displays, home decor, DIYs, and so much more!